Malicious PDF — malware analysis report

Static analysis result for SHA-256 b876c58a00597178…

MALICIOUS

PDF

371.3 KB Created: 2015-08-23 23:50:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-10-27
MD5: c82210c77210d0ae07b16b413e1eb2c7 SHA-1: a08d5ed22b29df1d0d78c17538f0db8cac121755 SHA-256: b876c58a0059717803801c3e942a73737331d3d31ac82bb2dbd2e1d486627075
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is likely intended to host malware or phishing content. The embedded content, though heavily obfuscated, suggests a lure for a game download, aligning with common social engineering tactics. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+gta+4+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693306_skachat__chit__dlya_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4692/4692968_shema__ustanovki__chashi_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693339_serial__mentovskie__voynuy_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58EF3 7564 bytes
SHA-256: 156f1c5e98e8ee802fa3249d521a1e26fcc269d4ed10ebd1b63f89d4122ae7fb
font_01_sfnt_off0005a475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A475 13072 bytes
SHA-256: 73bcf7db1280ca10bc1fb852b643c43a82acfabdb77c3350434dedb88b6f3011

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